(BLUE-BILLED TYRANT.)
+Cnipolegus cyanirostris+, _Burm. La-Plata Reise_, ii. p. 457
(Mendoza): _Scl. et Salv. Nomencl._ p. 43; _Barrows, Bull. Nutt.
Orn. Cl._ vol. viii. p. 141 (Entrerios).
_Description._--Uniform dull black; inner webs of the wing-feathers
margined with dull white; bill plumbeous, feet dark brown: whole
length 5·7 inches, wing 3·0, tail 5·6. _Female_ dark cinnamomeous
brown, brighter on the head and rump; wings blackish, wing-coverts
and secondaries edged with pale rufous; tail blackish brown, outer
margins of outer rectrices and inner webs of all the rectrices,
except the two middle, bright rufous; below pale fulvous, densely
striated with blackish; bill and feet brown.
_Hab._ S. Brazil, Paraguay, Uruguay, and La Plata.
In size this species of Black Tyrant is but slightly smaller than the
one described, and the colour is also of an intense black, but the
white wing-band is less conspicuous, the borders only of the inner webs
of the quills being white. It also differs in having a bright blue
beak and red eyes. Azara discovered it in Paraguay, and described the
brown-plumaged female as a distinct species. He merely says that it sits
on the summit of a bush and darts after passing insects, but it will, no
doubt, be found to possess some curious performing habits like the other
species of the genus.
Mr. Barrows met with this species on the Lower Uruguay, in the month of
September, and Burmeister obtained it near Mendoza.